Water-cooled panel door



Feb. l1, 1958 o. L. BRAUN 2,822,788

WATERLCOOLED PANEL DooR Filed Dec. 9, 1954 2 sheets-sheet;

IN VEN TOR. OZ'TW/A/ L. BIP/1 l/N El ...En

o. L. BRAUN l WATER-COOLED PANEL DOOR Feb. 11, 1958 2 Sheets-Sheet 2 Filed Deo. 9, 1954 mm.. Nm

n m E mmf 1N V EN TOR. OTTW/N L. BRA UN United States Patent G WATER-COLED PANEL DGOR Ottwin L. Braun, Pittsburgh, Pa., assignor to Reliance Steel Products Company, lt/icleesport, Pa., a corporatlon of Pennsylvania Application December 9, 1954, Serial No. 474,246 Claims. (Cl. 122-498) This invention pertains to furnace doors, and more particularly Water-cooled panel type doors provided with aflreproof monolithic lining for protection of that portion of the door directly exposed to the heat of the furnace.

An object of the invention is to provide a water-cooled paneled furnace door having a reproof monolothic lining on the back face thereof, and having heat transferring studs embedded in the lining and attached to the Watercooled portions of the door.

A further object of the invention is to provide rigidifying panels to a furnace door of the character described in which substantially the entire back plate of the door is water-cooled.

Panel type water-cooled furnace doors have the advantage of being more rigid than conventional at faced doors. The addition of a reproof lining to the back plate of the door makes for longer life of the door, particularly those portions thereof which are directly eX- posed to furnace heat. Studs are usually secured to the rear face of the back plate for retaining the lireproof lining in place. Prior art panel-shaped doors, by reason of the spacing of the panels through which the cooling Water ows, exposed portions of the back plate which could not be water-cooled. Any lining-retaining studs attached to these exposed or dry portions of the back plate caused rapid deterioration of the back plate Yin the area of attachment by reason of the heat from'the back plate lining being conducted directly into the dry portions of the back plate. In the present invention, by reason of the novel form of door panels and method of attachment thereof to the back plate, normal spacing of the lining-retaining studs will not place the studs upon a dry portion of the back plate.

In the drawings forming a part of this disclosure:

Fig. l shows a plan view of a water-cooled panel door embodying the invention;

Fig. 2 showsY a transverse section through the doors and; panels taken on the lines II-II of Fig. l;

Fig. 3 shows a cross section through the door in' adirection; longitudinally of the panel along lines Ill- Ill ofv Fig.- 1;

Fig.v4 shows one ofthe closure members at the Yianges of the panels;

Fig. 5 is a plan view of a paneled water-cooled door involving a modification of the invention; v

Figs. 6 and 7 are sections through the door taken on the lines 'VI-Vl and VII-VII of Fig. 5 illustrating they door construction; Y l

Fig. 8 is an enlarged view of one of the closure members between the anges of the panels;

Fig. 9 is a cross section through the door illustrating a connection between the panels and the back plate providing a lining observation port; and

Fig. l0 is a cross section throughthe vdoor illustrating,` the. preferred form of connectionxbetween the panelsand back plate.

Referringnow in detail to` Figs. l torl'inclusivefof the drawings, reference character 1 indicates the door assembly comprising a back plate 2 and a front plate 3, which are disposed in spaced relation to provide passage of the cooling water. The back plate comprises a continuous body portion 4 having a rearwardly and outwardly-extending peripheral flange comprised of the portions 5 and 6. The rearwardly-extending portions 5 are inclined slightly inwardly of the back plate for reception and retention ofthe reproof door lining 8. Secured to the body portion 4 of the back plate are a plurality of spaced studs 7 which terminate short of the outer face of the lining. These studs Servet-o anchor the lining in position and conduct heat from the lining to the watercooled back plate. The monolithic lreproof lining 8 is applied to the rear face of the back plate 2 between the flange portions- 5 Yin plastic form, and when dried is retained in place by the inclined flange portions 5 and the studs 7. The outer face of the lining Sis preferably within or below the plane of the back plate ilange portions 6.

The front plate 3 comprises `a bodyl portion 9 having a rearwardly-extending, peripheral flange 10 which is secured to the flange portions -6 of the back plate, as by Welding. The body portion 9 of the front plate has the central portion thereof removed along the lines 11 and 12 for reception of the panel members 13 and 14. The panel members 13 are substantially channel shaped having a web 15 and divergingrflanges 16. The panels 14 are provided with a web portion 17 having a ydiverging flange 18 extending the length of one side thereof. At the Opposite Side of the web a diverging llange 19 extends for a portion of the length thereof, the llange l19 being of the same width as the flange 18. The panels 14 and 14a at the center of the door as shown in Fig. l of the drawings are right and left-hand with the unilanged portions abutting, and having an opening 20 formed in the abutting surfaces so that one-half of the opening lies in each panel 14 and 14a.

As shown in Fig. 2 of the drawings, the flanges ofthe panels are diverging and extend to the back plate 2. The spacing of the panels 13, 14 and 14a are such that the adjacent converging flanges substantially abut at their engagement with the back plate, and are welded together and to the back plate. At each side of the opening in the face plate Sand along the line 11 is a member 21, extending from the front plate tothe back plate to intersect with the ange16 of the adjacent panel 13. This member 21 is welded to the back plate and adjacent flange 16, and togthe body portion 9v of the front plate.

At each end of the panels. 13` and- 14, the V-shaped openings formedby the converging.. adjacent flanges are closed by a substantially triangular-shaped member 22 as shown inFig. 4 of thel drawings. These members. 22 are shown in Fig. 4 of the drawings These members 22. have their convergingrsides secured to the converging `ad-` jacent` flanges and the remainingr sidedisposed in theV plane of and secured to theporti'on 9 of the face plate. The, V-shaped opening'formed by the flanges 19 of the panels 14 and 14a has its end positions also closed by a member 22. They outer end of the openinghas themember 22- securedto the llanges 19 and to the portion 9 of the face plate, the inner end of' the opening having the member 22 secured to the convergingilanges andthe abutting web portions 17. Theremainingvabutting portions of -thewebs 11 are Welded together as at 23 and 24 The opening Ztl' in the `door front plate has a correspondingfalignedopening inthe back plate r2. The member 29"extends through these openings and monolithic lining 8 `to form-a water-tight connection. At the sides of the door in the lflange-siti of the front plate are suitable Water'inletand outlet connections-25 and 26j The usual` clean-out plugs: 27 mayadvantageously be providedV asshown. As Awiily be seen fromuan inspectiouofiFigs, 2-

i 3" and 3, water flowing through the inlet and outlet connection of the door passes between Vthe spaced front and back plates, and through the openings formed by the panels 13 and 14. A cluster of lining inspection openings 28 areV formed in Vthe webs 17 of the panels 14 andin' the back plate 2. These openings are connected'by suitable sections of tubing which extend through the openings 28 and are welded to the back and front plates. These scctions of tubing prevent the water owing through the panels 14 and 14a from escaping through the inspection openings 23.

.Referring now to Figs. 5 to l0 inclusive, wherein Vis disclosed a modified form of the invention, the door is generally the same as that shown in Fig. l, excepting for the method of forming the paneling. As shown in Fig. 6 of the drawings, theV back plate 32 has a rearwardly and outwardly-extending peripheral flange comprised of the portions 33 Vand 34. The portions 33 are inclined slightly inwardly to lock the monolithic liningin place. Secured to the body portion 35 of the plate 32 are a plurality of lining-retaining studs 36. The front plate 37 is disposed in spaced relation to the rear plate 32 and provided with a rearwardly-extending peripheral flange 38 which extends to adjacent the outwardly-extending ange portion 34 of the back lplate and is welded thereto. The body portion of the front plate 37 has a rectangular opening formed therein along the lines 39 andr40. A corrugated panel plate 41 has channel-shaped depressions 42 formed therein and a central slot bounded by the lines 43 and 44. `Within the slot so formed is mounted a channelshaped member 45 having a web 46 and diverging side flanges 47. The free ends of the flanges 47 are disposed in the plane of and welded to the body of the plate 41 at the lines 43. This panel plate 4l is welded to the fron-t plate Within the opening formed by lines 39 and 40.

As shown in Fig. l of the drawings, theback plate 32 has a plurality of studs 48 secured thereto and hollow spacing members 49 enclosing the studs for a portion of the length thereof. These spacing members are of a larger inside diameter than the outside diameter of the stud 48. The webs 50 of the channel-shaped depressions 42 and the web 46 of the channel-shaped member 45 have a plurality of openings therein registering with the :studs of the back plate 32 so that the studs 43 project through said openings and are welded in place securing the mid portions of the front plate with the mid portion of the black plate. Registering openings l are formed in the front plate 41 and the back plate 32. A bell-shaped member 52 is secured with said openings and extends through the monolithic lining 53 of the hack plate. Suitable water inlet and outlet 54 and 55 are provided on the door and the usual clean-out plugs 56. Aligned openings 57 are formed in the front and back plates and connected by sections of tubing 58 to provide lining inspection openings. Similar openings 57a may be provided in the webs of the channels 42 and 45'to provide lining inspection openings as in Fig. 9 instead of using the Welding stud construction of Fig. l0. The latter construction is preferable as it etectively connects the front and back plates t'ogether, and provides positive spacing of the plates. The door is completed by welding the members 59 (Fig. 8) at each end of the channel-shaped depressions 42 and 45. The member 59 is welded to the side anges of the depressions and Ito the adjacent face of the top plate 37.

The preferred method of forming the securing the door panels in place have been disclosed in the drawings and described herein. It will be obvious to those skilled in the art that other methods of forming and assembling the door parts may be utilized to produce the doors of Figs. l and 5 without departing from the invention as disclosed herein. From an examination of Figs. 1 and 5 it will. be apparent that a peripheral channel has been formed around the door through which the cooling water mayjrfeely'circulate, and that the panel portions of the door are connected to this peripheral channel in a manner to provide free circulation of water over substantially the entire face of the back plate. The monolithic lining applied to the back plate is retained therein by means of the inclination of the rearwardly-extending portion of the bach plate ange, and thestuds secured to the back plate provide vertical support for the lining. These studs also transmit some of the heat of the lining to the back plate, which in turn transfers it to the cooling Water, thereby extending the life of the lining.

The exact details of construction shown and described herein are for the purposes of illustration and not limitation, except as made necessary by the scope of the. appended claims.

I claim:

l. ln a water-cooled furnace door structure in combination, a back plate having a continuous peripheral flange comprised of a rearwardly-directed `portion-and a portion directed outwardly therefrom, a front'plate comprised of connected marginal portions disposed in spaced relation to the back plate so as to overlie the back plate flange and a portion of the back plate body providing a central opening in the front plate, a rearwardly-disposed peripheral flange on said front plate forming side and end walls of the door and secured to the outwardly-directed back plate flange portion, the opening in the front plate defined by said marginal portions being closed by a corrugated panel member extending between a pair of opposite marginal door portions, said panel comprising a plurality of spaced web portions'disposed in the plane of and having their ends Welded to the adjacent marginalY front plate portions, the spaces between adjacent panel web portions and between the endmost panel webs and adjacent front panel marginal portions being closed by substantially U-shaped portions having a web disposed between the planes of the front andxback plates and for-V wardly and outwardly-extended flanges connected to said panel webs and adjacent front plate marginal portions, the ends of each of said U-shaped portions being closed by a member secured to the ends of the U-shaped portion anges and to the adjacentA front plate marginal portions to form a water-tight door structure. Y

2. The door structure as in claim l wherein the webs of said U-shaped portions are spaced from the back plate by a'plurality of tubular members disposed longitudinally of the webs, openings are provided in said webs concentricY with the opening in the tubular members, and a stud welded to the back plate extends through each said opening and is welded to said web of the U-shaped portions.

3. The door structure as in claim 1 wherein coaxial openings are formed in said corrugated panel member web portions and the back plate and tubular members extend through said openings and are welded to said portions and back plate providing inspection openings for a refractory lining applied to the inwardly directed face of the back plate between the ilanges thereof.

4. In a water cooled furnace door, in combination, a back plate having a continuous rearwardly and outwardly extending peripheral flange, a front plate disposed in spaced relation to the back plate and having a central opening therein dened by a continuous marginal plate portion terminating in a rearwardly disposed continuous ilange connected with the outwardly disposed back plate ange, said spaced connected front and back plate tianges defining between Vthem, a continuous peripheral hollow chamber about the` front face and the sides of the door, a plurality of substantially channel shaped panel members closing the front plate central opening, each said panel member having a web poltion disposed in the plane of said front plate and having the ends of said web por.- tion welded to the adjacent opposite margins of the front plate opening, rearwardly diverging flanges at thesides of said web portion extending to the back plate, the adja-Y 'cent anges of adjacent panel members having a common continuous Welded connection with each other'and the back plate, the margins of the front plate opening aligned with said web portion anges having rearwardly and inwardly extending anges directed towards and secured to the adjacent portions of the back plate and adjacent panel ange, closure members connecting the ends of the adjacent converging panel member flanges and the adjacent margins of the front plate opening, and water inlet and outlet connections on the front plate rearwardly disposed continuous flange providing cooling water circulation through said continuous peripheral hollow chamber and the panel members.

5. The Water cooled door as defined in claim 4 wherein the panel members at the center of the door have their opposing anges extending only a portion of the lengths of the last mentioned panel members and the unanged adjacent portions connected together, the inner ends of the adjacent panel flanges having a closure member connected thereto and to the webs of their respective panels, said latter unanged adjacent web portions and the back plate having aligned openings within which is mounted a peep hole member having water tight connections thereto.

References Cited in the le of this patent UNITED STATES PATENTS 1,015,404 Schewczik Jan. 23, 1912 1,690,619 Christy Nov. 6, 1928 2,325,945 Fuchs Aug. 3, 1943 2,547,229 Pottmeyer Apr. 3, 1951 2,557,456 Nichol June 19, 1951 2,686,957 Koerper Aug. 24, 1954 

